Looking for Cook: After he finished last season with a flourish and had a strong training camp, tight end Jared Cook figured to be a significant factor in the offense this season.

That may eventually prove to be the case, but he was only a bit player in the loss to the Jaguars.

Cook was thrown to twice and caught one pass for seven yards. He had another reception nullified because of a holding penalty on guard Leroy Harris.The Titans got off to a slow start against the Jaguars and only ran 49 offensive plays.

"Their offense pretty much took the majority of the clock," Cook said. "It was just hard for us to get things going. When you come out as slow as we did and you don't have many opportunities, that's going to leave you in the negative."

Cook is very much in the plans going forward, according to Munchak.

"We definitely feel like he's still a weapon," he said. "That's a good thing."

Incomplete grade: Munchak gave fullback Quinn Johnson a grade of incomplete for his debut with the Titans last Sunday.

With the offense struggling to move the ball against Jacksonville's defense, the 6-foot-1, 263-pound Johnson rarely got on the field.

"He only got like five or six plays," Munchak said. "What he did, he did well. But again, it's hard to get too excited one way or the other. On the offensive side, it's hard to judge a lot of things."

Johnson, acquired in a trade with the Packers, is filling in for Ahmard Hall, who was suspended four games for violating the NFL's policy on performance-enhancing substances.

Another new Titan expected to make a difference in the run game, tight end Daniel Graham, didn't even get on the field against the Jaguars.

"There were certain guys we just didn't get in certain packages because we had so much three-wide because we got behind," Munchak said.

Practice squad: The Titans signed offensive lineman Troy Kropog to the practice squad. They had released him from the 53-man roster on Friday.